Third World countries includes most of Africa, Latin America, and Asia. However some exceptions exist to this rule. Some European countries were part of the non-aligned movement and a few were and are very prosperous, including Switzerland and Austria. In the so-called dependency theory of thinkers like Raul Prebisch, Theotonio dos Santos, and Andre Gunder Frank, the Third World has also been connected to the world economic division as "periphery" countries in the world system that is dominated by the "core" countries. Due to the complex history of evolving meanings and contexts, there is no clear or agreed upon definition of the Third World and the term is now less popular than it was during the 1970s and 1980s

The undeveloped countries within the treaty of North Atlantic treaty organization belong to Africa, Asia, Latin America and Oceania are called the third world. India is inclusive in 3rd world countries.

The term Third World was originally coined in times of the Cold War to distinguish those nations that are neither aligned with the West (NATO) nor with the East, the Communist bloc. Today the term is often used to describe the developing countries of Africa, Asia, Latin America and Oceania.
Even India is a third world country that way

India comes under it.

May be Third world is there where the ppl of third class mentality ask the questions with third class mentality and also answers it .

may be u will find it with every politician and third class followers of third class religious leaders.